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Student’s t test


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Student's t test

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Student’s t test

  1. 1. Student’s t-test (Paired/Repeated Measures)
  2. 2. Statistical Analysis All data were included in the analyses, including data obtained during periods in which technical problems occurred with the bionic pancreas. Comparisons between study groups were performed with the paired-sample, heteroskedastic Student’s t-test. The mean of daily differences was calculated as described previously.
  3. 3. t-tests One Sample H0: μ= # HA: μ≠ # (μ> # or μ< #) Two Sample H0: μ1=μ2 HA: μ1≠μ2 (μ1 >μ2 or μ1 < μ2) Paired H0: μ1-μ2=0 HA: μ1-μ2 ≠ 0 (μ1−μ2 > 0 or μ1-μ2< 0) *small sample size (n< 30)
  4. 4. Assumptions: 1. Random Sampling 2. Normally Distributed
  5. 5. Benefits: Eliminating between patient variation. →Increased statistical power
  6. 6. Calculation: